[quote=@Timemaster]
It seems quite interesting. Count me in. Any limits to how different the aliens are? Any hard rules about what species we create?

Don't take it too seriously if you can't gather too many people, it's summer. 
[/quote]

The aliens can be just about anything you can come up with. Its meant to be an original universe outside of any comic universes. Just imagine the mostly humanoid species from the GLC and Star Trek. No sentient clouds or viruses, but alien dogmen and treefolk are cool.